Recently Facebook roll out facial recognition feature by default automatically for all outside of the US Facebook users.Facial recognition by Facebook will tag you automatically as you or your friends uploaded photo to Facebook,then will publishing to wall with message ‘YOU NAME was tag on ABC album’,so as someone computer mouse across the photo,you name will appear and can find your Facebook link.

There are no privacy concern.Now can disable facial recognition on Facebook to prevent others tagging you in photo without your permission.